That sustainability is not a question of concerns about the environment is shown in some brief reflections that had been made in preparation of the EXPO 2015, in Milano. the presentation highlights that we are talking about societal sustainability. And as such it is concerned with relations – relations of people that are characterising their productive and reproductive activities in every day’s life. Thinking along this line has to take account of the fact that the environment – “natural” and “man-made” – is not external but an entity of which human beings and their praxis are essential part. Re-emphasising praxis is essential as in this way we can go beyond isolated activities – as important as measures to protect nature, traffic control, calls for responsible consumption and the like are, they are conceptually not anything more than a drop in the bucket. Thanks go to the Department of Political and Social Sciences – University of Pavia. Human Development, Capability and Poverty International Research Centre, IUSS Pavia and the Fondazione Giangiacomo Feltrinelli